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-   -   renumberMesh problems (http://www.cfd-online.com/Forums/openfoam-pre-processing/123776-renumbermesh-problems.html)

Jonathan September 20, 2013 13:13

renumberMesh problems
 
Hi there everyone,

has anyone been able to successfully run renumberMesh on a mesh with cyclic BC's to reduce bandwidth and speedup their simulations.

I have tried multiple approaches to try to get this to work, but everytime, renumberMesh ends up breaking the face ordering on the cyclics and then the solvers fall over

Is there something I should know about this utility i don't? I am using OF-2.1.1 and meshes made in ICEMCFD (Fluent format).

This is what i have tried:

1) fluent3DMeshToFoam
2) createPatch -> to fix the cyclics
3) renumberMesh
4) simpleFoam ---> FAIL

1) fluent3DMeshToFoam
2) createPatch -> create simple 'patch' BC's instead of periodics
3) renumberMesh
3) createPatch -> create new cyclics
4) simpleFoam ---> FAIL

and a few other combinations i cannot recall right now (there have been too many!)

I have tried with pointSync on and off with no difference that i can tell. Surely it cannot be that Foam does not work with basic utilities such as renumberMesh and cyclics - which are essential to all rotating machine simulations which are a huge user of CFD codes ... :(

any help or advice on how to do this would be much appreciated.

thanks in advance,
regards
jonathan


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